Monthly Archives: April 2014
166.HOW DO ARTERIES DIFFER FROM VEINS?
There is no transportation system in any city that can compare in efficiency with the circulatory system of the body.
If you will imagine two systems of pipes, one large and one small, both meeting at a central pumping station, you’ll have an idea of the circulatory system. The smaller system of pipes goes from the heart to the lungs and back. The larger one goes from the heart to the various other parts of the body.
165.WHY DO CATFISH HAVE WHISKERS?
A catfish might say to you: “why do you call them ‘whiskers?’ They are not whiskers at all!” And, of course, it’s only because those things on the fish’s mouth resemble a cat’s whiskers that we call them that. Actually they are barbels, or feelers, and help the catfish know what’s going on all about him.
There’s another way a catfish is supposed to resemble a cat: makes a buzzing or croaking sound when caught that suggests a cat’s purring. It’s for these two reasons that this kind of fish got its name “catfish.”
164.WHEN WERE CRABS FIRST EATEN?
Whoever was the first man to eat a crab (or a lobster!), was probably very brave, or very hungry or both. If you’ve never seen one before in your life, the last thing you’d think of doing is eating one!
Crabs are so widely scattered all over the world, and have been known to man for such a long time, that we can never find out who was the first to eat crabs and when. Crab probably eaten by people who lived near the sea thousands of years ago. There are crabs off the coasts of Europe, North America, South America, India, Japan, and most of the Pacific Islands, Alaska, and so on.
